208588520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{744959}}^1$

素因数の和:744977

約数の個数: 32

約数和(自身を含む): 536371200

約数和(自身を除く): 327782680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 744959, 1489918, 2979836, 3724795, 5214713, 5959672, 7449590, 10429426, 14899180, 20858852, 26073565, 29798360, 41717704, 52147130, 104294260, 208588520]

約数ペア:

[(1, 208588520), (2, 104294260), (4, 52147130), (5, 41717704), (7, 29798360), (8, 26073565), (10, 20858852), (14, 14899180), (20, 10429426), (28, 7449590), (35, 5959672), (40, 5214713), (56, 3724795), (70, 2979836), (140, 1489918), (280, 744959)]